The influence of polar-cap convection on the geoelectric field at Vostok, Antarctica - Corney, RC; Burns, GB; Michael, KJ; Frank-Kamenetsky, AV; Troshichev, OA; Bering, EA; Papitashvili, VO; Breed, AM; Duldig, ML (Journal of Atmospheric and Solar-Terrestrial Physics, 2003)